SKU: 3646957909

MSD CDI ECU ENHANCER IGNITION, 650 701 YAMAHA SUPERJET JS650 JS701 4253

Sale price$210.57 Regular price$233.97
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Description

MSD CDI ECU ENHANCER IGNITION, 650 701 YAMAHA SUPERJET JS650 JS701 4253Overview: If you own a Yamaha with a 650 or 701 engine, this Enhancer is a necessity! The Enhancer produces a powerful spark with increased spark duration. Not only does the improved spark energy boost power, but this Enhancer features a more aggressive timing curve for even more power to get you going! At lower rpm you'll notice incredible acceleration and throttle response due to advancing the timing. Then as the rpm increases, the timing is

Overview:

If you own a Yamaha with a 650 or 701 engine, this Enhancer is a necessity! The Enhancer produces a powerful spark with increased spark duration. Not only does the improved spark energy boost power, but this Enhancer features a more aggressive timing curve for even more power to get you going! At lower rpm you'll notice incredible acceleration and throttle response due to advancing the timing. Then as the rpm increases, the timing is retarded to the factory setting to prevent detonation and engine damage. For racers, there is also a lower rpm limit that you can activate for quick and consistent holeshots. By activating a switch mounted on the handlebar the rpm will limit at approximately 3,000 rpm. The instant the button is released, the rpm revs up just as normal and you rocket off. Everything you need to install the Yamaha Enhancer is supplied along with factory connectors for a direct plug-in installation!

Features:

    Application:

    Year Make Model Submodel Engine Size
    1990 - 1993 Yamaha SJ650 Super Jet /

    Specs:

    Brand MSD
    Emission Code 4
    Maximum Voltage 30 KV
    Primary Resistance 0.2 Ohms
    Product Type Ignition Box
    Secondary Resistance Less than 2000 OHMS
    Turns Ratio 2.91736111111111
    Warning California Proposition 65
    Warranty Limited 1 Year Warranty
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 3646957909

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    4.6 ★★★★★
    Based on 1807 reviews
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    Chelsea, US
    ★★★★★ 5
    Comfortable, sturdy, waterproof
    Size: 9.5, Color: Black/Black
    Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 17, 2026
    K
    Verified Purchase
    Kate
    Grantham, US
    ★★★★★ 5
    Super cute, comfortable, practical, love that they are slip on
    Size: 10.5, Color: Tobacco/Black
    I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days. Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 27, 2026
    N
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    Nicholle King
    Charlottesville, US
    ★★★★★ 5
    Worth it.
    Size: 8.5, Color: Crushed Clay/Gum 2
    Love all my Sorels. These were really cute, good color, comfortable, warm, fit well, good quality and sturdy. I would order again.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 26, 2026
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    jmb02129
    San Leandro, US
    ★★★★★ 5
    Fantastic Boots!
    Size: 8.5, Color: Redwood/Gum 10
    Completely satisfied with these boots. True to size, well made, comfortable from the get-go; not break in needed. Waterproof- really. The Red Suede has withstood a nasty winter season & still looks great. Good traction. I like the ankle height which looks good with long, mid length pants & leggings. I love the easy slip on/off aspect..made getting ready for dog walking easy. I 100%recommend!
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    Reviewed in the United States on April 11, 2026
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    Paige
    Whiting, US
    ★★★★★ 5
    Definitely worth the price
    Size: 6.5, Color: Black/Black
    Absolutely love these boots! I originally bought them to wear in NYC in December & they did not disappoint. They were comfortable, cute, durable and worked well in the slush/snow. The traction on the bottom is also nice! They kept me warm with wool socks. I wear them almost daily now. Perfect for everyday. easy to wear with variety of outfits. Good every day shoe.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 3, 2026

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